3+3n=15

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Solution for 3+3n=15 equation: 



3+3n=15

We move all terms to the left:

3+3n-(15)=0

We add all the numbers together, and all the variables

3n-12=0

We move all terms containing n to the left, all other terms to the right

3n=12

n=12/3

n=4

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